How do you calculate LED lumens per watt?

For example, a 100 W incandescent bulb produces about 1,600 lumens, for an efficiency of 1,600/100 = 16 lumens per watt. A halogen bulb, on the other hand, consumes only 72 watts for the same amount of brightness, making its efficiency 1,600/72 = 22 lumens per watt.

How are lumens calculated?

The equation to calculate lumens, when candelas and solid angle of a light source are known is: 1lm = 1cd * sr. Candelas are mostly used to describe brightness of lighting fixtures that produce focused beam of light at a narrower angle in a single direction, such as laser pointer, flashlight and spot light.

How many lumens do LED lights produce?

LED technology typically produces 70-100 lumens/watt. So, LEDs are about 5-6 times more efficient at producing light than incandescent bulbs.

How bright is 1500 lumens?

The reference point: a standard 100-watt incandescent light bulb produces about 1,500 – 1,700 lumens. Not a measure of brightness; instead, it’s a measure of how much electricity (or energy) a light bulb consumes to reach its claimed brightness.

How are LED lights measured?

How do you calculate lumens per room?

As a handy rule of thumb, a sitting room or bedroom will generally require around 10-20 lumens per square foot, while a bathroom or kitchen will need a stronger level of lighting, at around 70-80 lumens per square foot. To work out the lumens you need, simply multiply the square footage of the room by this figure.

Is 3000 lumens too bright?

In other words, 3,000 lumens is meant to give a room a brighter light. This is not ideal if you have a small room and it’s a bedroom. You don’t want to blind your eyes when you’re about to go to bed. On the other hand, 2,000 lumens is ideal if you wish to light up a 200 square-foot living room.

How many lumens is a 100w LED bulb?

So when buying your new bulbs, think lumens, not watts. The brightness, or lumen levels, of the lights in your home may vary widely, so here’s a rule of thumb: To replace a 100-watt incandescent bulb, look for a bulb that gives you about 1600 lumens.

How many watts is 1500 lumens LED?

Lumens to Watts Comparison Table
Lumens Light bulb LED
970 – 1100 lm 75 watts 8 – 11 watts
1380 – 1600 lm 100 watts 12 – 14 watts
1500 – 1800 lm 120 watts 15 – 17 watts
2000 – 2500 lm 150 watts 18 – 23 watts

What does 4000 lumens mean?

A lumen is a unit measurement of light. … For example, a 100 square foot living room, which needs 10-20 foot-candles, will need 1,000-2,000 lumens. A 100 square foot dining room, which needs 30-40 foot-candles, will need 3,000-4,000 lumens.

How bright is 7000 lumens?

7000 lumen is good for a projector, but it can be a little too much for average kind of use such as home gaming on a dark room, students, home theater or camping. But they work very well outdoors with a lot of ambient light and also with the sun still out.

How many lumens is the sun?

For every watt our sun puts out, it produces 93 lumens of visible light. So at earth’s orbit, for each square meter, our sun puts out 127,000 lumens. That is very bright. No wonder it hurts to stare at the sun.

How bright is a 3000K LED light?

An LED with a Temperature of 2700K produces a very warm almost golden white light while 7000K is a very cool white that can in some applications appear to have a light blue glow. 3000K is a soft warm white, 3500K or 4000K is in the range of bright warm white, and beyond that it becomes bright cool white.

How many lumens does a 15 watt LED bulb produce?

LED Wattage CFL Wattage Lumens
6W 12W 700 lm
9W 15W 900 lm
12W 20W 1,300 lm
Apr 16, 2018

How Far Will 6000 lumens shine?

Super Bright Heavy Duty Hand Held flashlight – the super ultra brightest 6000 lumen (maximum) CREE 2 LED bulb produces a bright focused beam with a lighting distance range of more than 2600 ft / 800 m.

How bright is a 5000K LED light?

The higher the number, the brighter the light. … A 100 watt LED light bulb in 5000K can have 1500 lumens. A 4000K 100 watt will also be 1500 lumens. A 60 watt LED light bulb in 5000K can have 750 lumens.

What’s the difference between 3000K and 5000K?

A 3000K LED bulb produces soft white or warm white or yellowish color light. This one is best for places where you relax such as the bedroom and the living area since this kind of color temperature gives you a cozy and sleepy feeling. A 5000K LED bulb produces a bright daylight kind of color.

What does 5000K mean in LED lights?

5000K Color Range

Lighting that’s in the 5000K color temperature range is blue-white in color. The quality of this light is bright and crisp. Small details stand out under this type of light because of the color contrast this crisp light offers.

What is K in LED lights?

Color temperature is a way to describe the light appearance provided by a light bulb. It is measured in degrees of Kelvin (K) on a scale from 1,000 to 10,000. … A light bulb’s color temperature lets us know what the look and feel of the light produced will be.

Which is brighter 4100K or 5000K?

Cool color temperatures of 3500-4100K are brighter, offering a “cleaner” look. … Full spectrum color temperatures are between 5000K-6500K. This light is very bright and pronounced. Typically perceived as harsh, full spectrum color temperatures are rarely used in homes.

Is 6000K brighter than 5000K?

So, our eyes will consider 6000K LEDs to be brighter, compared to the 5500K, which is a natural white, and 5000K, which is warm white. The truth is, that the 5000K LED bulbs are as bright as 6000K LED, so selecting LEDs with one of these color temperatures is a matter of taste.

Is 6000K or 8000k brighter?

The higher you go in the Kelvin Rating, you get more color in the light in exchange for visibility. So 6000k will be just slightly brighter than 8000k and 8000k will be slightly brighter than 10000k and so on but they will have more and more color to them.

What is 6500K lumens?

Luxrite BR30 LED Light Bulb, 9W (65W Equivalent), 6500K Daylight White, 650 Lumens, Dimmable, Damp Rated, LED Flood Light Bulb, UL Listed, E26 Medium Base, 1-Pack.